28797421238874 has 24 divisors (see below), whose sum is σ = 62843293356480. Its totient is φ = 9530081848008.

The previous prime is 28797421238821. The next prime is 28797421238933. The reversal of 28797421238874 is 47883212479782.

28797421238874 is a `hidden beast` number, since 2 + 8 + 7 + 97 + 421 + 2 + 38 + 87 + 4 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5754877842 + ... + 5754882845.

It is an arithmetic number, because the mean of its divisors is an integer number (2618470556520).

Almost surely, 2^{28797421238874} is an apocalyptic number.

28797421238874 is an abundant number, since it is smaller than the sum of its proper divisors (34045872117606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28797421238874 is a wasteful number, since it uses less digits than its factorization.

28797421238874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11509760834 (or 11509760831 counting only the distinct ones).

The product of its digits is 606928896, while the sum is 72.

The spelling of 28797421238874 in words is "twenty-eight trillion, seven hundred ninety-seven billion, four hundred twenty-one million, two hundred thirty-eight thousand, eight hundred seventy-four".